MOSS Load Balanced URL

Posted: December 18, 2007 in MOSS 2007


                One of the fields least understood by someone first coming into MOSS is the Load Balanced URL which if a field required on the “Create Web Application” screen from central administration. It will default to the current server URL and port. If you have worked on a single web front end install, chances are you didn’t even give this field a second look. Chances are of you added another WFE to your farm, you suddenly scratched your head and murmured some type of expletive when you hit your second WFE and found all the links pointed back to your first WFE and no matter what you did you could not fix this.

                Taken in it’s simplest, most basic explanation what you put in this field, is what all links on MOSS will be prefixed with.  So if you have DocumentA.doc in the Shared Doc lib off of your main site collection. Your URL to it will be http://<Load balanced URL value>/Share documents/DocumentA.doc.

                 So why do we want this? What purpose does it serve? It is all around how NLB works and how to make the most of it. Without this, all links would end up being based on the local server. Any links you shared would jump to the server, not through NLB. In many, if not all you should not even be able to hit the server directly this way. If you could, under the scenario above, if the server you were hitting suddenly became overloaded, you would be stuck there throughout your session. However, since the Load Balanced URL bounces you back to through the NLB URL, this allows you NLB to properly balance the load.

                There is a lot of info out there to help you out in NLB I have put together a series of links below which hopefully help you out in your search. Happy hunting!


          TechNet Creating a MOSS web application

          Technet MOSS Configure Alternate Access Mapping

          What every SharePoint administrator needs to know about Alternate Access Mappings (awesome series)

          MOSS Farm, Virtual server and NLB

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  2. I am not certain where youu are getting your info, but good topic.
    I must spend some time studying much more or figuring out more.
    Thank yyou for great information I was looking for this info for
    my mission.

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